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ITEM 19 |
City Council Memorandum Public Works & Utilities Memo No. CP24-146
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Date: |
May 23, 2024 |
To: |
Mayor and Council |
Thru: |
Joshua H. Wright, City Manager Andy Bass, Deputy City Manager John Knudson, Public Works and Utilities Director Daniel Haskins, Capital Projects Division Manager |
From: |
Melanie Sikes, Senior Engineer |
Subject: |
Construction Manager at Risk (CMAR) Construction Services Agreement No. WW2302.401, with B&F Contracting, Inc., for the Price Road 66-Inch Sewer Interceptor Rehabilitation |
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Proposed Motion: |
Move City Council award CMAR Construction Services Agreement No. WW2302.401 to B&F Contracting, Inc., for the Price Road 66-Inch Sewer Interceptor Rehabilitation, in an amount not to exceed $43,696,207.25. |
Background/Discussion: |
The Public Works and Utilities Department administers a Wastewater Sewer Assessment Program to evaluate, prioritize, and repair deteriorated sewer pipes and manholes within the city’s collection system. As part of this program, approximately 13,000 linear feet of 66-inch diameter sanitary sewer pipe and 22 manholes along Price Road from just south of the Loop 202 Santan Freeway to the Ocotillo Water Reclamation Facility require rehabilitation. The method of rehabilitation will be via Cured-In-Place-Pipe (CIPP), which is an industry standard method to rehabilitate pipeline. The timing of this project is important, as the CIPP method requires the epoxy lining product used to be applied during the cooler months of the year in order to properly set. The project scope of work consists of rehabilitation of sanitary sewer pipes and manholes, bypass piping and pumps. The total agreement completion time is 590 calendar days following Notice to Proceed, although the project is expected to start in June 2024 with the majority of work to conclude in October 2025. After this construction is completed, the roadway pavement will be resealed and striped to complete the project. This pavement work should take place in November 2025 and take approximately one week to complete with final striping to occur in January 2026 after the seal coat has properly cured. The project will begin with the installation and end with the removal of five (5) 18-inch High Density Polyethylene (HDPE) temporary sewer bypass pipes in southbound Price Rd. Installation of the pipe will begin in August 2024 and the removal of this pipe will occur between July and October 2025. These pipes are necessary to bypass up to 15 million gallons a day of wastewater around the work site where the existing 66" sewer pipe will be relined. Minimal traffic impacts are anticipated during the first two months of the project. Beginning in August 2024, the traffic impacts during the installation of the bypass piping will require two southbound lanes to be closed, as the pipes themselves will take up a full lane of traffic. The northbound lanes will remain open. The two southbound lane closures will be 24/7, but will be reduced to a single lane closure as the work allows. This work is scheduled for daytime hours, six days per week. Night and weekend work will be performed, as necessary, to coordinate with the Arizona Department of Transportation (ADOT) and the operations of the SR101 and SR202 freeways. Importantly, the project schedule has been coordinated to occur after the conclusion of other projects impacting traffic further north along the Price Corridor, including the private Air Products nitrogen line installation and the City's sewer rehabilitation work, both along the SR101 frontage road. Once the bypass piping is installed, the sewer pipe relining work will begin. During the CIPP lining and manhole work, one southbound lane will remain closed and two northbound lanes will be closed. These closures are 24/7 and work is planned for six days per week from November 2024 to June 2025. Lane closure configurations may vary dependent on required detour routes related to the SR202 widening project. A related Professional Services Agreement with Dibble & Associates Consulting Engineers, Inc., dba Dibble, for the Price Road 66-Inch Sewer Interceptor Rehabilitation Construction Management Services, is also scheduled for this City Council meeting. |
Evaluation: |
The selection process was followed in accordance with city policy and procedure and state law. Staff recommends agreement award to B&F Contracting, Inc., based on qualifications, relevant firm experience, team experience, project understanding, and project approach. Staff reviewed the Guaranteed Maximum Price proposal and determined it to be reasonable. |
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Fiscal Impact |
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